201321002 has 8 divisors (see below), whose sum is σ = 303546756. Its totient is φ = 100138752.

The previous prime is 201320989. The next prime is 201321007. The reversal of 201321002 is 200123102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 199685161 + 1635841 = 14131^2 + 1279^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (201321007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260393 + ... + 261164.

Almost surely, 2^201321002 is an apocalyptic number.

201321002 is a deficient number, since it is larger than the sum of its proper divisors (102225754).

201321002 is a wasteful number, since it uses less digits than its factorization.

201321002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521752.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 201321002 is about 14188.7632301057. The cubic root of 201321002 is about 586.0882676778.

Adding to 201321002 its reverse (200123102), we get a palindrome (401444104).

The spelling of 201321002 in words is "two hundred one million, three hundred twenty-one thousand, two".